(django) Resync all table sequences in postgres

gistfile1.sql

DO $$                                                                          
    DECLARE                                                                    
        tables CURSOR FOR SELECT tablename FROM pg_tables WHERE tablename NOT LIKE 'pg_%' ORDER BY tablename;
    BEGIN                                                                      
        FOR table_record IN tables LOOP                                        
            BEGIN                                                              
                EXECUTE 'SELECT setval('''|| table_record.tablename ||'_id_seq'', (SELECT MAX(id) FROM '||table_record.tablename||')+1)';
            EXCEPTION                                                          
                WHEN OTHERS THEN                                               
            END;                                                                 
    END LOOP;                                                                  
END$$;